Lock for car-doors.



N. L. ANTHONY.

LOOK FOR GAB. DOORS.

APPLIOAT-ION FILED 111111.13, 1912.

1,038,815. Patented Sept. 17,1912.

h 4 L 4 L.

a i kl 6 9@ NOEL L. ANTHONY, OF GRANSTON, RHOIDE ISLAND.

LOOK FOR CAR-DOORS.

Specification of Letters Patent.

Patented Sept. 1'7, 1912.

Application filed. March 13, 1912. Serial No. 683,468.

To all whom it may concern:

Be it known that I, NOEL L. ANTHONY, a citizen of the United States,residing at Cranston, in the county of Providence and State of IthodeIsland, have invented a new and useful Improvement in Looks for Car-Doors, of which the following is a specification.

This invention pertains to certain new and useful improvements in looksfor car doors, or sliding doors of varying types, and the object of theinvention is to provide an improved simplified form of lock in which aminimum number of parts are present. I

A further object of the invention is to provide means for effectuallyholding the parts in locked position, thus preventing the look frombeing easily picked, or opened by unauthorized persons.

Still further the invention aims to generally improve and increase theefficiency of locks of this character.

In the drawings, Figure 1 is a side elevation of the present invention.Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a frontelevation. Fig. 4 is a perspective view of the spring bridge member.Fig. 5 is a side elevation of the key, and Fig. 6 is an end elevationthereof.

The door frame 1 is provided with a socket 2 in which the keeper 3 issecured, the latter having oppositely beveled front faces 4 thatconverge toward the open end of the socket. The sliding door 5 isprovided with a socket 6 in which a block 7 is rigidly secured at pointsbetween the top and bottom of the socket 6. Spring arms 8 are secured bymeans of screws 9 to the top and bottom sides of the block 7, the springarms having their free ends projecting without the socket 6 and beingbifurcated as indicated at 10, spring pressed detents 11 being receivedand pivoted in the bifurcated portions 10. The detents 11 are so mountedthat they are capable of movement toward the spring arms 8, but not awaytherefrom, so that when the door 5 is closed, the detents 11 will rideup on the inclined faces 4: of the keeper 3 and will then be moved bythe springs to a position where they engage the rear face of the keeper,in which position the parts will be held locked. A spring arm 12 isformed to have a cross piece 13 at its free end, the outer ends of thecross piece being turned outwardly at right angles so as to engage thetop side face of the top spring arm 8 and the bottom side face of thebottom spring arm 8, thus constituting a bridge member which holds thefree ends of the spring arms 8 from being moved apart in an obviousmanner. The spring arm 12 is secured by means of set screws 15 to oneside face of the block 7 at points between the top and bottom thereof. Aplate 16 is secured in the socket 6 and projects without the same so asto extend over the outer ends of the spring arms to protect the same,when the door is open. Plate 16 has a keyhole 16 to receive the key 17.The key 17 isof a width to spread the spring arms Sapart when theopposite side edges of the keyward are brought into proper engagementtherewith. The key hole 16 is inclined so that it will cause the keywardto occupy proper initial position prior to turning thereof to spread thearms 8 so that the latter will cause the detents 11 to occupy suchposition that they will pass the keeper 3 without engagement therewithwhen the door 5 is open. A pin 18 is secured at right angles to thespring arm 12 in such position that same will aline with the keyhole 16,the key 17. having a socket 19 to receive said pin so that when the keyis inserted in the key hole, the socket 19 will receive the pin 18, andupon the key being pushed in wardly, the same will move the pin 18 andtherewith the spring arm 12 to cause the fingers 1 1 to move out ofengagement with the spring arms 8, and while the key is still held inthe position just described, it is rotated to spread the spring armsapart. lVhen the key is withdrawn, the spring arm 12 will return tonormal position depicted in Fig. 3. Each spring arm 8 has a pocket 20formed therein to receive the detents when they are moved toward thespring arms in riding 'upon the inclined faces 4. of the keeper.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a sliding door lock, in combination with akeeper having oppositely inclined front faces, a block secured in thesocket of the door, a spring arm secured to the top and a spring armsecured to the bottom of said block, the outer ends of said spring armsextending without the socket and having spring pressed detents pivotedto their ends, which detents have movement toward the spring arms andlimited movement away therefrom, a plate secured to the door andoverlying the outer ends of the spring arms, said plate having akeyhole, a spring arm secured to the side of the block and having across-piece whose ends are turned at right angles so as to engage theouter sides of the first named spring arms, and a pin carried by thethird named spring arm and alined with the keyhole.

2. In a sliding door lock, in combination with a keeper having inclinedfront faces, a pair of movably mounted members carried by the door andhaving pivoted detents at their outer ends which detents are movabletoward said members and have limited movement away therefrom and areadapted to ride upon the inclined faces of the keeper, and means to movesaid detents to a vertical position when same are on the rear side ofthe keeper, said pair of members being stationary when the detents aremoved to locked position. r

3. In a sliding door lock in combination with a keeper, :1 pair ofspring arms h, ving detents which are pivoted to the outer ends ofthearms and are spring pressed, said detents being movable toward the armsand having limited movement away therefrom,

the spring arms being stationary when the V detents are moved to lockedposition.

l.- In a sliding door lock, in combination with a keeper, a pair ofspring arms having detents which are pivoted to the outer ends of thearms and are spring pressed, said detents being movable toward the armsand having limited movement away therefrom,

the arms having pockets to receive said detents, and a movable brid 'ememberhaving parts for engagement with the outer sides of the springarms.

5. In a sliding door lock, in combination with a keeper, a pair ofmovably mounted members having means which when the name to thisspecification n the presence of door is closed will ride over the keeperand whlch when 1n posltlon on the rear side of said members beingstationary when said means is moved to locked position.

6. In a sliding door lock, in combination with a keeper, a pair ofmovable arms hav' ing spring pressed detents on their free ends forengagement with the rear side of the keeper, said detents being movabletoward the arms and having limited movement away therefrom, and beingreceived in pockets formed in the arms.

7. In a door lock, in combination with a keeper, a pair of membersmovable toward and away from each other, means on said members adaptedto ride over the keeper to engage on the rear side thereof, meanswhereby the first mentioned means are held against movement away fromsaid members to hold same locked, said members being stationary when thefirst mentioned means are being moved to locked position, and means tospread said members to permit the first mentioned means to move past thekeeper.

8. In a door lock, in combination with a keeper, a pair of membersmovable toward and away from each other, means on said members adaptedto ride over the keeper to engage on the rear side thereof, meanswhereby the first mentioned means are held against movement away fromsaid members to hold same locked, means to lock said members againstspreading movement, and means to move said last named means toinoperative position and to spread the members.

9. In a door lock, in combination with a keeper, a movable member, meanson said member adapted to move toward the same and to ride over thekeeper to engage on the rear slde thereof, means whereby said firstnamed means has limited movement away from said member to hold samelocked in relation to the keeper, said member being statlonary when thefirst named means is riding over the keeper, and means to move saidmember to permit the first named means to rule past the keeper.

In testimony whereof I have signed my two subscribing witnesses.

NOEL L. ANTHONY.

Witnesses ADA E. HAGERTY, J. A. MILLER.

Copies of this patent may be obtained for five cents each, byaddressingthe Commissioner of Patents,

Washington, I). G. V

